ok heres the scoop. i have a 93 lx sedan that has drums on the rear. i just bought rear trailing arms and rear disc brakes off a 96 integra LS. i also have the 40/40 proportioning valve of a 95 integra RS. the main thing i need to know is do i or should i change out the brake booster and master when i do the swap? i have done this before of a 94 dx sedan but i didnt change out the porp valve or booster or master and due to super weak brakes i wreaked the car in rush hour trafic but this time im going to do a hella lot more research before go ahead with this conversion. i keep hear and reading about this 15/16 stuff or something along those lines. which comfuses me what does it stand for and is it important?